I mostly do not listen to speakers or even components before purchase. I rely mostly on research and gut instinct. For example, I've only bought 4 sets of speakers for my main system and of those, 3 pairs I had never listened to. I patiently wait for awesome deals and am prepared to buy without listening.
I don't think anyone here would question these speaker non-auditions: Fourier 1, NHT 3.3, and MBL 101E. For example, the later was offered for less than $20K at an estate sale where you could only visually inspect, but no opportunity to listen.